Improved oyster-dredge windlass



N.PETERS. PNOTO-LITMOGRAPHER, WASHINGTON. D C,

UNITED STATES PATENT OFFICE@ WT. T. HOWARD AND OLIVER REEDER, OF BALTIMORE, MD., ASSIGNORS TO OLIVER REEDER AND SAMUEL R. WAITE, OF SAME PLAGE.

IMPROVED OYSTER-DREDGiE WINDLASS.

Specification forming part of Letters Patent No. 99,900, dated February l5, 1870.-

.o all tti/tom it may concern:

Be it known that we, W. T. HOWARD and O. REEDER, of Baltimore, in the county of Baltimore and State ot' Maryland, have invented a new and useful Improvement iu Oyster- Dredge Winders; and we do hereby declare that the. tollowngis a full, clear, and exact description thereof, which will enable others skilled in theart to make and use the same, iet'erence being had to the accompanying drawings, forming part ot' this'specitication.

Thisinvention relates to improvementsin machinery for winding or raising oyster-dredges; anditconsistsin tliecotnbination,with theloose drum and sliding clutch for communicating the motion ot' the driving-shaft to it, of a pawl and segmental disk ot' peculiar construction, and a ratchet or toothed wheel, under an arrangement whereby the clutch will be instantly thrown out ot' gear with the drum when the dredge catches on roeks'or other wbstructions as the vessel by which it is dragged moves along. The object ot' the said arrangeinentis to ielieve the operators, who turn these drums by hand, from the danger of injury by the hander-.inks heilig' suddenly reversed in motion and rapidly revolved when the dredges are fouled. f

Figure 1 is an cud elevation ot our improved attachment, and Fig. 2 is a sectional elevation.

Similar letters of reference indicate corresponding parts.

A is the winding shaft, mounted on the vessel-traine B, and provided with hand-crank o t'or turning it. Y

D is the drum, arranged -on the shaft A to turn loosely when not engaged by the clutchdisk E, which slides to and from the drum on a spline, F, whichimparts rotary motion to it. This clutch is provided with a bevel or conical faced disk, G, fronting the ends of the drum,

which carries a toothed disk, H. l

l is a pawl pivoted above the toothed whee or disk H on any suitable support, K. This pawl carries a segmental bevel-faced disk, L,

it will crowd the clutch out of connection lwith the drum and leave the latter free to turn on the shaft. The clutch being engaged with the drum and the latter turned for winding up to right, as represented in Fig. 1, the teeth ot' the disk H will ride under the pawl; but it' the chain or dredge is caught, so as to reverse the motion of the drum, (the vessel heingin inoti0n,) the pawl l will be carried hack to the left, forcing the segmental wedge-disk L against the disk G of the clutch, throwing it out ot' gear with the drum, and the latter will be free to revolve without carrying the cranks out of the hands ot' the operators.

Te may attach this apparatus to winders now in use by attaching the support K to the frames B, as represented in the drawings, and applying the disk 'H to the drum and G to the clutch in any suitable way.

Having thus described our invention, we claim as new and desire to secure by Letters Patentl. The combination, with the drum and sliding clutch E, ot' the toothed disk H,'pawl I, segmental disk L, and bevel-faced disk A, all arranged for operation substantially as specified.

2. The combination, with the frame A, of the support K for the segmental disk L, all substantially as specitied.

The above specification of our invention signed by us this 10th day ot' November, 1869.

W. T. HOWARD. OLIVER REEDER.

The segmental disk 

